By Nizar Manek, 28 August 2017(Bloomberg) -- At least 13 people were injured in a grenade attack in Ethiopia’s Oromia region, the site of periodic protests over the past 18 months, Fana Broadcasting Corp. reported.The blast, caused by an identified assailant, occurred Thursday in Jimma town, the state-linked broadcaster said on its website, citing Fadil Mohammed, a local police commander. (93 words -- Bloomberg terminal only)https://www.bloomberg.com/news/terminal/OHTESG6S972O